Monolithic class D amplifier

Details Monolithic class D amplifier Monolithic class D amplifier

2006-07-11

2006-07-11

Grier, Laura A. (Department: 2644)

Electrical audio signal processing systems and devices

With amplifier

C381S111000, C330S010000, C330S251000, C257S368000

Reexamination Certificate

active

07076070

ABSTRACT:
A monolithic1.75is mounted in a speaker cabinet1.71to drive the voice coil1.74of the speaker1.70.The monolithic integrated circuit may be a class D amplifier1.10,and is at least a half-bridge or full bridge power MOSFET device. Structures and process for forming the mos switching devices2.20of the bridge driver circuits are disclosed. Also disclosed is the N+ buried layer4.14of the QVDMOS transistors4.43of the bridge circuits.

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A. Watson Swager, “Power ICs Weighing The Benefits of Integration”,EDN-Electrical Design News, vol. 39, No. 14, Newton, MA, Jul. 1994, pp. 68-72, 74, 76, 78, 80,82.

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